Shutting Down Darrow's Signal

After the opening cut-scene, walk along the right side of the helicopter landing pad, and continue towards the small square hole up ahead. Take the ladder down to the lower level.

Look to your right and pick up the box and carry it down to the end of the hall. Throw it down the flooded hallway to set off the EMP mine. Jump on top of the metal pipe, crouch, and continue forward.

Hop on top of the boxes, grab the large white container, and place it in the water next to the pipes. Hop down on top of this box and then jump over to the metal pipe along the left side.

Walk to the edge of the pipe and shoot the frag mine in the air vent. Now shoot the lower of the two remaining wooden crates. Jump on top of the last crate and then jump into the vent.

When you enter the vent you'll see a frag mine ahead. Shoot it with your pistol. Continue in the vent until you drop down into a supply room. Pull the power lever to turn off the electric current in the flooded hallway. Walk out the orange door and proceed down the hallway, follow it around until you see the ladder. Climb it.

You'll appear in a hanger. Use the orange door and walk through the hallway, up the stairs, and continue through the double set of doors that lead you out into a larger hanger.

As you exit you'll have the option to go straight ahead into the elevator or down a set of stairs to the lower part of the hanger. We choose to go down in order to loot a number of lockers as well as giving us the ability to hack the box robot down here as well -- this will help later in the mission. Once you're downstairs make a u-turn and walk over to the security hub on top of the desk. It's a level 5 hack so if you don't have the ability to hack this you won't be able to take control of the box robot. If you are, take the time to hack this terminal before proceeding back up stairs to the elevator.

As you exit the elevator you'll find the complex and offices to be wasteland. Take the time to salvage items from lockers, desks, and rooms. Continue through the hallways and proceed up the stairs. If you can, hack the first door on your left at the top of the stairs (after the L5 sign). It's a level 4 hack to get past the door and to the security hub computer inside. If you can hack these you'll be able to change the local turrets priority target to enemies -- highly recommended. Continue through the hallway until you come across the broken windows that lead to the control room. Jump through the broken window and a cut-scene will begin.

After the cut-scene you'll be in a dialog stand-off with Hugh Darrow. Here are the correct dialog choices that will net you 1,000 XP, The Final Countdown Achievement/Trophy, and give you a Pocket Secretary (make sure you read it) to help you defeat the Hyron Project.

Begin to back track to the hangar bay towards the elevator, except now you'll have to content with a horde of mindless enemies, most of which you can actually run by. You can engage them in combat if you wish but you're only wasting ammo and energy bars. If it gets really bad you can use gas grenades to disperse these crowds or -- as we were doing on our way to Darrow's location -- hacking terminals and robots to take care of these psychos. Once you reach the elevator take it down to the hanger.

As you enter the hangar bay -- and if you managed to hack the box robot -- you can simply walk across to the other side of the hangar with little in the way of resistance. Again, like before, you can simply run past most of these lunatics using a gas grenade to disperse some of the larger hordes. Continue into the red-tinted hallway, jump through the broken window area, and open the door to continue to the next zone.

Oddly enough you'll find a L.I.M.B. clinic in this hallway that has been barricaded by a large vending machine. If you have the strength Augmentation (that honestly, you really should have gotten at some point in the game), you could enter this clinic to purchase two more Praxis Kits. We purchased two Praxis Kits with our credits and upgraded to have the Typhoon Explosive System (which will help in the upcoming boss fight).

As you continue to move through these white hallways you'll hear William Taggart over the loud speakers asking for assistance. This will set into motion the first of your secondary objectives. Continue outside and proceed to evade the hordes of psychopaths. If you do not wish to rescue Taggart, proceed down the staircase. Otherwise see where he's located below.

Outside along the deck behind the large white tube is a doorway that is barricaded by a few metal beams. Crouch and enter hallway, down the stairs, and into the first room on your right through the red door. Knock out the crazies in here and access the security hub terminal (security level 5) and hack the robot so it doesn't interfere with your sleuthing around. If you can't hack it, then you're just going to have to be extra cautious of the patrol bot and cameras.

Move through the rest of this storage room and hop over the crates that lead out to the hallway. There are two ways to Taggart's location from here by either punching through the highlighted wall or hacking the nearby security 5 door panel. If neither of these options work for you then backtrack to before you entered the red door, sneak along the pipe to avoid the patrol robot, and utilize the vent that leads to Taggart's location. Once you're done speaking with him, backtrack to the outdoor walkway.

Once you're back outside continue all the way down the staircase past the psychopaths (like we've said before, you can simply run past most of them) and continue into the barracaded hallway. Once there you'll hear Sarif over the loudspeakers. If you wish to save him, enter the elevator straight ahead.

Exit from the elevator and continue down the hallway. Pass through the double doors and you'll enter a processing area. A bunch of the crazies are hanging out near red fuel barrels. A simple bullet to these barrels will knock nearly all of them out of your way. Otherwise you can run past them past the yellow generator and down the stairs to the lower area of Section B.

Continue to the end of this area and enter the hallway to your right. Look in the upper left corner of this hallway and spot the air vent. Hop on top of the boxes in order to enter the vent.

Follow this vent until you arrive at Sarif's location. Speak with Sarif to update your objective and then backtrack out of this area, taking the elevator back up to the floor above.

Exit the elevator and follow the signs that point you to the "control tower." Continue forward and you'll reach a catwalk that is littered with the psychos. We simply took aim for the red fuel barrel and blew all of them up to clear a path to the objective marker. Continue this route until you reach the large elevator. Interact with the switch to be taken all the way down to the Hyron Project.

There are multiple ways to defeat the Hyron Project and we'll be displaying a variety of strategies below.

The easiest is if you still have the laser rifle in your inventory (remember when we told you to pick it up after speaking with Tong?). One steady stream of fire on Zhao's body will kill her in about five seconds making this one of the easiest final boss fights in video game history. Just be sure to take this shot when the turrets are not locked in on your location. If you don't have the laser rifle, well, you're going to have to work at this a bit more.

If you had a successful conversation with Hugh Darrow and convinced him he was in the wrong you should have access to a passcode terminal that is located between the first and third control pods in the southwest corner of the room. This code (2012) will terminate the life control system for the tertiary pods, thus cracking Zhao's shield leaving her open for attack with a weapon of your choice -- for us it was the Typhoon Explosive System three times in a row at point blank range.

IF you don't have the access code AND you lack the capability to hack the life support system then you need to individually purge each of the three pods (by pressing the big red button next to each bod) and then shoot these characters until they are killed (they count as bosses, so don't bother traquilizing them). Doing so will open up chambers with soldiers and security droids that you will have to attack. These areas are well labeled with the words "Storage." Once each of the pods have been destroyed, quickly run up to Zhao's location and use your heaviest weapon on her -- for us, we used the Typhoon Explosive System three times in a row to defeat her.

With Zhao defeated and the Hyron Project in ruins there is little left to shoot at so put your gun away. Continue down the corridor behind Zhao's body and speak with Eliza Cassan. You'll have four choices to decide the fate of mankind. It's entirely up to you. If you want to see each of the different endings for yourself, be sure to check out our Endings section. Either way, congratulations are in order. You just beat Deus Ex: Human Revolution!